package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddresssBookService addresssBookService;

    @Autowired
    private OrderDetailService orderDetailService;



    @Transactional
    @Override
    public void submit(Orders orders) {

        Long userId = BaseContext.getCurrentId();
        orders.setUserId(userId);

        LambdaQueryWrapper<ShoppingCart> lqw=new LambdaQueryWrapper<>();
        lqw.eq(ShoppingCart::getUserId,userId);

        List<ShoppingCart> shoppingCartList = shoppingCartService.list(lqw);

        if (shoppingCartList==null||shoppingCartList.size()==0)
        {

            throw new CustomException("购物车为空，不能下单");
        }



        User user = userService.getById(userId);


        Long addressBookId = orders.getAddressBookId();

        AddressBook addresssBook = addresssBookService.getById(addressBookId);

        if (addresssBook==null)
        {
            throw new CustomException("地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();

        AtomicInteger amount=new AtomicInteger(0);

       List<OrderDetail> orderDetails =shoppingCartList.stream().map((item)->{
                    OrderDetail orderDetail=new OrderDetail();
                    orderDetail.setOrderId(orderId);
                    orderDetail.setNumber(item.getNumber());
                    orderDetail.setDishFlavor(item.getDishFlavor());
                    orderDetail.setDishId(item.getDishId());
                    orderDetail.setSetmealId(item.getSetmealId());
                    orderDetail.setName(item.getName());
                    orderDetail.setImage(item.getImage());
                    orderDetail.setAmount(item.getAmount());
                    amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
                return orderDetail;
                }
                ).collect(Collectors.toList());

                orders.setId(orderId);
                orders.setOrderTime(LocalDateTime.now());
                orders.setCheckoutTime(LocalDateTime.now());
                orders.setStatus(2);
                orders.setAmount(new BigDecimal(amount.get()));
                orders.setUserId(userId);
                orders.setNumber(String.valueOf(orderId));
                orders.setUserName(user.getName());
                orders.setConsignee(addresssBook.getConsignee());
                orders.setPhone(addresssBook.getPhone());
                orders.setAddress((addresssBook.getProvinceName()==null?"":addresssBook.getProvinceName())
                                    +(addresssBook.getCityName()==null?"":addresssBook.getCityName())
                                    +(addresssBook.getDistrictName()==null?"":addresssBook.getDistrictName())
                                    +(addresssBook.getDetail()==null?"":addresssBook.getDetail()));

        this.save(orders);


        orderDetailService.saveBatch(orderDetails);

        shoppingCartService.remove(lqw);


    }
}
